1231 results about "Open cell" patented technology

The embodiment of the invention discloses an embedded substrate, a power supply device and electronic equipment. The embedded substrate comprises a front surface first adding layer jointed with the first surface of the core part maintaining body, a conduction structure electrically connected with a circuit layer of the dielectric layer is arranged in the dielectric layer of the front surface first adding layer, and the conduction structure comprises a first conduction structure electrically connected with a bonding pad on the chip; the dielectric layer of the first additional layer on the front side is made of an exposable and developable material, an open pore for constructing the conduction structure is formed through exposure and development, the open window of the outer protection layer has a first projection on the first surface, the first open pore for constructing the first conduction structure has a second projection on the first surface, and the second projection covers the first projection. Through the arrangement, the first conduction structure with a larger through-flow cross section is constructed and formed by utilizing the windowing size of the chip side, so that the through-flow capability is effectively improved, and the heat conduction capability is high. In addition, the bonding stress between the circuit layer and the front surface of the chip can be reduced, the layering risk is reduced, and the reliability is better.

The multifunctional acoustic device is formed by periodically arranging unit cells in the horizontal direction, and each unit cell comprises an upper frame body, a lower frame body and a vibration absorption sandwich layer located between the upper frame body and the lower frame body; the upper frame body is provided with a through hole; the vibration absorption sandwich layer comprises a central cantilever beam located at the transverse center position, a sandwich plate surrounding the periphery of the central cantilever beam and fixed between the upper frame body and the lower frame body, and vibrator mass blocks arranged above and below the central cantilever beam; the sandwich plate is connected with the central cantilever beam through a plurality of L-shaped beams; and the plurality of L-shaped beams surround the periphery of the central cantilever beam. The lattice sandwich structure is used as a basic frame, a local resonance system with a spring mass part is formed, a sub-wavelength elastic wave band gap frequency band is obtained, a low-frequency vibration reduction effect is generated, holes are formed in the upper frame body, the remaining part in the structure is used as an air spring, a Helmholtz resonant cavity is formed, and meanwhile low-frequency vibration reduction and broadband sound absorption are achieved.

An embedded substrate, a power supply apparatus, and an electronic device. The embedded substrate comprises a front first additional layer, which is joint with a first surface of a chip holding body, wherein a conduction structure which is electrically connected to a circuit layer of the front first additional layer is provided in a dielectric layer of the front first additional layer, the conduction structure comprising a first conduction structure electrically connected to a pad on a chip; the dielectric layer of the front first additional layer is made of an exposable and developable material, and openings for constructing the conduction structure are formed by means of exposure and development; and a window of an outer protection layer has a first projection on the first surface, a first opening for constructing the first conduction structure has a second projection on the first surface, and the second projection covers the first projection. By means of such arrangements, a first conduction structure having a relatively large through-flow section is constructed by using the size of a window on a chip side, thereby effectively improving a through-flow capability, and achieving a good thermal conductivity capability. In addition, the joining stress between a circuit layer and the front surface of the chip can be reduced, thereby lowering the risk of delamination, and providing relatively good reliability.

Ground-engaging components for articles of footwear include an outer perimeter boundary rim that at least partially defines an outer perimeter of the ground-engaging component, wherein the outer perimeter boundary rim defines an upper-facing surface and an opposite ground-facing surface. The outer perimeter boundary rim defines an open space at least at a forefoot support area of the ground-engaging component. A matrix structure extends from the outer perimeter boundary rim (e.g., the ground-facing surface and / or the upper-facing surface) and across the open space at least at the forefoot support area to define an open cellular construction with plural open cells across the open space at least at the forefoot support area. The matrix structure defines one or more sets of adjacent open cells, the set(s) including at least three open cells that are substantially aligned in the forefoot support area along a line extending in a forward medial-to-rear lateral direction.

A heat protective sleeve includes a body being cylindrical extending along a longitudinal direction and comprising a triply periodic minimal surfaces (TPMS) structure, an open cell foam structure, or a lattice structure. A strip extends along the longitudinal direction of the body. The strip is a same material as the TPMS structure, the open cell foam structure, or the lattice structure. The material of the strip is solid and without holes through it. An endcap removably couples to the body. In some examples, the body has fastening threads and the endcap has mating threads. The mating threads of the endcap are configured to engage with the fastening threads of the body to releasably couple the endcap to the body.

The invention discloses a battery device and a power utilization device, and the battery device comprises a box body which is internally provided with a containing cavity and comprises a first plate; the heat exchange assembly comprises a first heat exchange part and a second heat exchange part which communicate with each other, the first heat exchange part is arranged outside the box body, and the second heat exchange part is arranged on the face, facing the containing cavity, of the first plate; the connecting block is arranged on the first heat exchange part; the heat exchange connector penetrates through the connecting block in the first direction and then is connected with the open hole in the first heat exchange part in a sealed mode, and the heat exchange connector is located outside the connecting block and welded to the connecting block. According to the scheme, the sealing performance of connection between the heat exchange connector and the first heat exchange part can be guaranteed, the sealing performance of the heat exchange connector and the connecting block can be guaranteed, and the sealing performance of the heat exchange connector during connection is effectively improved. Due to the fact that the heat exchange connector is connected with the first heat exchange part and the connecting block in a sealed mode, the sealing reliability can be improved.

The invention relates to the technical field of chip embedded module packaging, in particular to a blind hole processing method and a substrate. An embedded chip substrate is prepared, a chip is embedded in the embedded chip substrate, and the chip is covered with an insulating layer; determining a hole opening position on the insulating layer, wherein the hole opening position corresponds to the embedding position of the chip on the chip embedding substrate; laser ablation is conducted on the hole opening position through ultraviolet laser according to preset laser parameters, so that an initial blind hole is machined in the hole opening position; and performing residue removal processing on the initial blind hole through plasma equipment to obtain a target blind hole. Therefore, the initial blind hole is machined in the hole opening position through the ultraviolet laser, molecular bonds can be directly destroyed, cold ablation is achieved and thermal damage is reduced on the basis of the characteristic that photon energy of the ultraviolet laser is high, meanwhile, the target blind hole with the smooth hole wall can be obtained by conducting residue removing treatment on the initial blind hole through plasma equipment, and the hole opening precision is improved. Compared with the prior art, high-precision and high-quality machining of the blind hole is achieved.

The invention relates to a solid-state battery positive electrode material layer and a solid-state battery, belongs to the technical field of solid-state batteries, and is used for solving at least one of the problems that an existing solid-state battery is easy to crack, poor in contact and large in resistance, and a solid-state electrolyte battery prepared by a physical vapor deposition method is thin in electrode thickness, low in capacity and the like. A plurality of holes are formed in the positive electrode material layer, the diameter of each hole is 0.1-10 [mu] m, the opening area of each hole in the unit area of the positive electrode material layer accounts for 20-60% of the total area, and each hole is of a through hole structure. The positive electrode material layer of the solid-state battery is provided with a plurality of holes with through hole structures, the solid electrolyte is embedded into the holes, the holes are filled with the solid electrolyte, the solid electrolyte covers the positive electrode material layer, and the holes have specific diameters and opening areas, so that the ionic conductivity is improved, and the service life of the solid-state battery is prolonged. The thickness of the prepared positive electrode material layer can be designed as required.

The present invention discloses a wireless ultrasonic measurement system and a construction method thereof, wherein the measurement system includes a sensing module and a detection module; the sensing module includes a piezoelectric layer on the surface of the detection object, a first lead-out electrode structure, a first grounding electrode structure, a first insulating plate, and a sensing coil; the first insulating plate is provided with a first opening; the first lead-out electrode structure includes a first lead-out electrode on the top of the piezoelectric layer and a second lead-out electrode in the first opening; the first grounding electrode structure includes a first grounding electrode and a second grounding electrode; the second lead-out electrode and the second grounding electrode are respectively connected to the first lead-out electrode and the first grounding electrode; the sensing coil is provided at the top of the first insulating plate. The detection system of the present invention uses an insulating plate to isolate the sensing coil away from the surface of the detection object, which is conducive to the sensing coil generating a non-zero induced voltage U ind , thereby enhancing the signal of the receiving coil, and realizing contactless ultrasonic signal reception with a receiving distance of up to 20mm.

A power end frame of a reciprocating pump includes a first ring, a second ring, and a plurality of connections extending between the first ring and the second ring. The first ring, the second ring, and the plurality of connections are integral with one another, and the plurality of connections comprises a plurality of struts that form a plurality of open cells between the first ring and the second ring.

The present disclosure relates to the technical field of earphone equipment, and describes a hybrid dual unit earphone, comprising an earphone casing, an inside cavity arranged in the earphone casing, a sound output port configured to communicate with the inside cavity and provided on the earphone casing, an independent sound guiding cavity arranged in the inside cavity, wherein an opening of the sound guiding cavity is arranged toward the sound output port; a dynamic unit component comprising a dynamic speaker arranged in the inside cavity, where the sound output direction of the dynamic speaker is set towards the sound output port; a high-frequency unit component comprising a high-frequency speaker arranged in the sound guiding cavity, where the sound output direction of the high-frequency speaker is set towards the sound output port.

The utility model relates to the technical field of batteries, in particular to a battery cell cover plate and a battery cell. The battery cell cover plate comprises a pole and a cover plate, wherein the pole comprises a pole body part and a plate body part, and the pole body part penetrates through a mounting hole of a cover plate main body; the terminal post is riveted with the riveting piece, so that the circumferential side wall of part of the post body part expands outwards to form a material expansion part; the section, perpendicular to the axis of the pole, of the pole forms a strip-shaped structure, K is equal to (1 / 3-2 / 3) L, and M is equal to (1 / 3-2 / 3) W. The section, perpendicular to the axis of the pole, of the pole is of the strip-shaped structure, so that compared with a traditional cylindrical pole structure, the pole has the advantages that the overflowing capacity is improved, and the size proportion relation between the pole body part and the plate body part of the pole is defined as K = (1 / 3-2 / 3) L and M = (1 / 3-2 / 3) W, so that the overflowing capacity of the pole is effectively improved; and the structural strength of the cover plate main body is not influenced by the opening size of the mounting hole, so that the structural strength of the battery cell cover plate meets the battery cell use requirement.

The present invention relates to the field of semiconductors. Provided are a semiconductor structure and a preparation method therefor, and an electronic device, which are used for simplifying semiconductor structures and preparation methods therefor. The preparation method for the semiconductor structure comprises: forming 2n stacked material layer groups (2101) on a first substrate (100), wherein each stacked material layer group (2101) comprises a first material film layer (2111) and a second material film layer (2121); forming n first openings (10) with different depths, and among the first openings (10) from shallow to deep, forming first isolation layers (310) at ends of the first (i-1) first material film layers (2111) penetrated by the ith first opening (10); forming a second opening (20) below each first opening (10), and forming second isolation layers (320) at ends of the first (n-1) first material film layers (2111) penetrated by each second opening (20); and below each second opening (20), forming a third opening (30) extending to the first substrate (100), and forming third isolation layers (330) at ends of the first material film layers (2111) penetrated by each third opening (30).

The invention relates to the technical field of noise treatment, and discloses a composite sound absorption and insulation device which comprises a cavity, a Fabry-Perot resonance structure, gradient structure sound absorption felt, two-dimensional dot matrix scatterer sound insulation rubber and a cover plate. An opening is formed in one side of the cavity, and the two-dimensional dot matrix scatterer sound insulation rubber, the gradient structure sound absorption felt, the Fabry-Perot resonance structure and the cover plate are sequentially arranged at the bottom of the cavity in the direction towards the opening. Wherein an opening is formed in the middle of the top of the cover plate; the Fabry-Perot resonance structure comprises a micro-perforated plate and a space coiling channel, and the micro-perforated plate is arranged right above an opening of the space coiling channel and penetrates through the cover plate to be matched with the opening of the cover plate, so that the cover plate covers the rest part of the space coiling channel; through the combination of a plurality of advanced sound absorption and insulation structures, the low-frequency noise of 100Hz and frequency multiplication of the transformer substation is effectively treated.

The utility model provides a three-position switch and a ring main unit, the three-position switch comprises a first fixed seat and a plurality of grounding contacts, each grounding contact corresponds to one phase in a power supply network, and the plurality of grounding contacts are arranged on the first fixed seat; the grounding shielding base is arranged on the first fixing base, the grounding shielding base is configured to be an integrally-formed metal piece, a plurality of open holes are formed in the grounding shielding base, and the grounding contacts are exposed out of the corresponding open holes; each second fixing seat is correspondingly provided with an isolation static contact. And a plurality of moving contacts are arranged on the third fixed seat at intervals, and the moving contacts can rotate relative to the third fixed seat so as to be electrically connected with the grounding contact or the isolation static contact selectively. By optimizing the electric field of the three-position switch, the three-position switch can have a better insulation level, and the overall size of the three-position switch is reduced. Furthermore, the three-position switch can be applied to a small-size ring main unit with space limitation and higher insulation requirements.

The double-spiral Helmholtz resonator comprises a cavity, an upper cover of the cavity is provided with at least two open holes, each open hole is internally embedded with a spiral pipe, the spiral pipes surround downwards along the interior of the cavity, the openings located above the spiral pipes are connected with a water area, a rubber coating is arranged in the cavity, and the rubber coating is arranged in the cavity. The spiral pipes are hollow spiral pipes which are not overlapped with one another, it is guaranteed that the water cavity and the resonant cavity are connected and communicated, and Helmholtz resonance is triggered through the physical interaction between the rubber coating and the embedded spiral pipes. Helmholtz resonance is triggered through the physical interaction of the rubber coating and the embedded spiral neck, an excellent sound absorption effect is achieved, theoretical prediction is well matched with a finite element simulation result, the sound absorption coefficient of the proposed double-spiral Helmholtz resonator structure cell element at 105Hz reaches 0.91, and the sound absorption coefficient of the double-spiral Helmholtz resonator structure cell element at 105Hz reaches 0.91. The wavelength k of the sound wave is 300 times of the thickness H of the metamaterial, and perfect absorption is achieved on the deep sub-wavelength scale.

The invention discloses a BIM (Building Information Modeling)-based suspended ceiling advanced accurate positioning and trepanning construction method, which comprises the following steps of: S1, establishing a construction model of each specialty in a suspended ceiling, performing collision inspection, and adjusting the construction model; s2, establishing a three-dimensional model including suspenders, keels and the like by utilizing BIM software; s3, comprehensive collision inspection is carried out, and the ceiling structure is prevented from conflicting with other professional equipment; s4, generating a construction drawing and organizing field implementation according to comprehensive suspended ceiling deepening typesetting; s5, a trepanning positioning plate is manufactured, and the trepanning positioning plate is used for accurately positioning the trepanning point position of the veneer plate on site; s6, paying off the trepanning point, confirming a central point and implementing accurate trepanning; and S7, after trepanning is completed, point location installation is conducted on facility equipment needing to be installed in advance. Advanced coordination of the keel in the suspended ceiling and various equipment point positions can be achieved, precise positioning of suspended ceiling trepanning is achieved, disassembly and rework are reduced, and the construction precision and efficiency are improved.

The invention provides an automatic disassembling and recycling system and method for waste electric energy meters, the system comprises a disassembling line and a PCB panel and further comprises a junction box on the PCB panel, the disassembling line is provided with a disassembling device, the disassembling device comprises a first processing platform and a second processing platform which are arranged on the disassembling line, and the first processing platform and the second processing platform are arranged on the PCB panel. The top end of the first processing platform and the top end of the second processing platform are each provided with an adjusting rail and a machining platform, and each machining platform is provided with a lifting assembly, a positioning assembly, a conversion assembly, a collection assembly, a transfer assembly, an air inlet assembly, an air outlet assembly, a limiting assembly and an output assembly. And the discharged electric energy is collected and used for doing work, and the collected electric energy is used for tapping the capacitor and collecting electrolyte, so that the safety on a disassembly line is greatly improved, and meanwhile, pollution is reduced.

The invention provides a three-dimensional porous material, a negative electrode composite material and application, the three-dimensional porous material has specially designed opening aperture distribution, the volume ratio of open pores with the opening aperture less than or equal to 2nm is greater than or equal to 70%, and the volume ratio of open pores with the opening aperture of 1nm-2nm is greater than or equal to 50%, so that the proportion of effective deposition pores in the three-dimensional porous material is relatively high; and the concentration ratio of aperture distribution of the openings is relatively high, so that a relatively excellent threshold limiting effect can be realized, and the negative electrode composite material with high gram volume and relatively high structural stability can be provided.

The invention is suitable for the technical field of solar cells, and provides a cell module and a photovoltaic system, and the cell module comprises a back contact cell which comprises a first polarity grid line and a second polarity grid line; the plurality of first welding strips and the plurality of second welding strips are respectively connected with the first polarity grid line and the second polarity grid line; the insulating strip is arranged on the sides, deviating from the back contact battery, of the first welding strip and the second welding strip, and the insulating strip comprises a through hole; the bus bar is arranged on the side, away from the back contact battery, of the insulating strip, the bus bar is electrically isolated from the first welding strip through the insulating strip, and the bus bar is electrically connected with the second welding strip through the through hole; wherein the insulating strip is a flexible insulating strip and comprises an open hole part and a non-open hole part, the through hole is located in the open hole part, and the thickness of the open hole part is larger than that of the non-open hole part. According to the flexible insulating strip, the thicker opening part is arranged in the flexible insulating strip, so that a buffering effect is achieved during welding and subsequent lamination, and the risk of subfissure and fragment is reduced.

The invention relates to the technical field of batteries, in particular to a silicon-carbon negative electrode material and a lithium ion secondary battery. The silicon-carbon negative electrode material comprises silicon-carbon particles, the silicon-carbon particles comprise a matrix, and the matrix comprises a porous carbon matrix and silicon particles located in internal holes of the porous carbon matrix; the porous carbon substrate is provided with open pores and closed pores, the open pores contain silicon particles, the closed pores contain an element K, and based on the total mass of the silicon carbon particles, the mass content of the element K is 50 ppm to 1000 ppm; the silicon-carbon particles comprise halogen, and based on the total mass of the silicon-carbon particles, the mass content of the halogen is 50 ppm to 2000 ppm; the silicon carbon particles and deionized water are mixed according to the mass ratio of 1: 10 to obtain an aqueous solution, the pH value of the aqueous solution at 25 DEG C is pH 1, and the pH 1 is 6-8. Comprising the silicon-carbon negative electrode material disclosed by the invention has the advantages that the expansion rate is improved, and the rate capability and the cycle performance are improved.

Systems and methods of the various embodiments may provide metal air electrochemical cell architectures. Various embodiments may provide a battery, such as an unsealed battery or sealed battery, with an open cell arrangement configured such that a liquid electrolyte layer separates a metal electrode from an air electrode. In various embodiments, the electrolyte may be disposed within one or more vessel of the battery such that electrolyte serves as a barrier between a metal electrode and gaseous oxygen. Systems and methods of the various embodiments may provide for removing a metal electrode from electrolyte to prevent self-discharge of the metal electrode. Systems and methods of the various embodiments may provide a three electrode battery configured to operate each in a discharge mode, but with two distinct electrochemical reactions occurring at each electrode.

The present invention belongs to the technical field of the preparation of modified isocyanates, and particularly relates to a modified isocyanate, a preparation method thereof and an application; the modified isocyanate comprises: 70-94 parts of an organic isocyanate; 6-30 parts of polyether polyol i; the polyether polyol i is a polyether polyol randomly copolymerized with EO / PO monomers and capped with EO, or a polyether polyol block copolymerized with PO monomers and capped with EO, or a mixture of the two; the average molecular weight of the polyether polyol i is 2000-10000, the functionality is 2-4, the EO content is 5-29 wt%, the hydroxyl value is 20-80 mgKOH / g, and the primary hydroxyl group content is greater than or equal to 70%. The modified isocyanate of the present invention has good storage stability, and the slow-rebound polyurethane foam prepared therefrom has fine open cells, and has the advantages of high tolerance, good tear performance, and good sound absorption and sound insulation effects.

A protective helmet comprising a helmet shell having at least two layers and the helmet shell having a flexural modulus from 50 MPa to 600 MPa as measured using ASTM D 790 B and a non-foamed specific gravity in the range of 0.916 g / cm3 up to 1.60 g / cm3. More than one helmet shell may be combined to provide greater protection to the wearer. The layers may be constructed of an open cell foam, a waterproof coating layer, a separator layer, a flexible layer, a slightly foamed layer, and a cushion layer. A protective facial barrier may be easily removed with use of a locking mechanism which removably secures the facial barrier to the helmet shell. The helmet shells may also be in parts and hinged so that the parts can separate for easy removal of the protective helmet. An adjustment locking mechanism may also tighten and adjust a second helmet shell.

The present application relates to a kind of composite current collector and its preparation method, belong to secondary battery technical field.The composite current collector provided by the present application has the original structure of sharp cone for shape memory polymer support layer, and the opening of support layer is filled with foaming agent and foaming aid.A kind of composite current collector provided by the present application can reduce weight and improve the energy density of battery.Secondly, the composite current collector provided by the present application increases the heat-sensitive function, which can cut off the electrochemical reaction inside the secondary battery on one hand after the thermal runaway and external impact of battery, and can reduce the heat generation of secondary battery on the other hand when the secondary battery is at high temperature, which has a triple guarantee for the safety performance of battery.

A method of 3D printing a garment can include 3D printing a first filament layer extending in a first direction, and 3D printing a second filament layer over the first filament layer. The second filament layer can extend in a second direction different than the first direction such that the first and second filament layers overlap one another at a plurality of contact points and collectively define a plurality of open cells.

A molten metal filtration apparatus is provided. The apparatus includes a filter chamber having a floor, a metal inlet, a metal outlet, and a wall surface adapted to be partitioned by at least one filter element having an open cell structure characterized by a plurality of interconnected voids. The filter element partitions the filter chamber. At least one heater device is provided at an elevation within the filtration chamber that is equal to or below the filter element.

The utility model provides a supporting column dismounting and mounting structure and a mobile workstation, the supporting column dismounting and mounting structure comprises a mounting base, a pressing and holding part and a locking assembly, and the mounting base can be mounted on a mounting object; one end of the hold-down part is connected to the mounting base, the other end of the hold-down part is provided with a connecting end, and the hold-down part and the mounting base can define a mounting hole; the locking assembly comprises a locking wrench and a connecting part, the connecting end is provided with an open hole, the connecting part can penetrate through the open hole, one end of the connecting part is connected with the mounting base, the other end of the connecting part is movably connected with the locking wrench, and the locking wrench can press the connecting end to move so that the pressing part can press the supporting column in the mounting hole. According to the mobile work station, a user can complete locking and unlocking of the mounting base and the supporting column by pulling tightly or pulling away the locking wrench, operation is easy, and the user can conveniently and rapidly disassemble, assemble and move the work station.

The invention provides an integrated compression molding forming method and system for an energy storage-bearing thin-wall component, and the method comprises the steps: selecting an area within a strain requirement to arrange the distribution of energy storage elements in the component based on forming simulation, reserving open holes in fiber-reinforced resin prepreg according to a design position, and then laying the fiber-reinforced resin prepreg; a plurality of high-temperature-resistant soft package energy storage elements are placed in the notches of the fiber reinforced resin prefabricated body; the positive electrode and the negative electrode of the high-temperature-resistant soft package energy storage element are wrapped by a termination adhesive tape and are led out from a prepreg layer, and then the outer side of the positive electrode and the outer side of the negative electrode are packaged with prepreg and pre-compacted; heating and softening the prefabricated body, putting the prefabricated body into a medium and low temperature component forming mold, heating and pressurizing, and then cooling, so as to integrally form the energy storage-bearing composite material component; and uncovering the termination adhesive tape on the energy storage-bearing composite material component, connecting the positive electrode and the negative electrode of each energy storage element in the component to a battery management system, and carrying out low-current charge-discharge circulation at the rate of 0.1 C to obtain the stable energy storage-bearing integrated component.

The invention relates to the technical field of server heat dissipation, and discloses a fresh air and cold plate type liquid cooling integrated server which comprises a cabinet body, filter cavities are formed in the two sides of the cabinet body, fan frames are symmetrically arranged on one side of the cabinet body, fan frames are fixedly arranged on the inner walls of the fan frames, and a plurality of fan blades are arranged in the middle of the fan frames. The fan frame penetrates through the outer wall of the cabinet body and is arranged in the filtering cavity, a filtering plate is arranged in the filtering cavity of the cabinet body, a plurality of filtering holes are formed in the outer wall of the filtering plate, a plurality of open holes are symmetrically formed in the inner wall of the cabinet body, and the open holes of the cabinet body are provided with screens. Through integration of two modes of fresh air direct air cooling and cold plate type liquid cooling, heat dissipation modes can be flexibly switched according to different environmental conditions and heat dissipation requirements of the server, efficient heat dissipation is achieved, and it is ensured that the internal temperature of the server is always kept within a reasonable range. The problem that the heat dissipation efficiency is poor under different weather conditions is solved.